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Pro trader tools. Free.

The calculators most sites hide behind a paywall — open, instant, no signup. Risk and math only; never advice.

Risk & sizing

Position Size Calculator

How many units to trade so a loss costs exactly what you decided.
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Risk/Reward Calculator

Your reward-to-risk ratio and the break-even win rate.
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Drawdown Recovery Calculator

The brutal math: the gain needed to recover a loss.
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Risk of Ruin Calculator

Monte-Carlo odds your edge survives.
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Prop-Firm Challenge Calculator

Can the math pass — and how many losses blow it?
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Expectancy Calculator

Your average edge per trade — positive or not.
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Effective Leverage Calculator

Your true leverage — and the move that wipes equity.
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Lot Size Converter

Standard ↔ mini ↔ micro ↔ units, instantly.
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ATR Stop Calculator

Volatility-sized stops from ATR × multiplier.
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ADR Position Size Helper

Position size from the average daily range.
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Profit Target Calculator

The target your R:R actually implies.
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Portfolio Heat Calculator

Total risk across every open position.
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Max Open Positions Calculator

How many positions your risk budget allows.
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Risk-per-Trade Ladder

Where 20 straight losses actually leaves you.
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Drawdown Recovery Time Calculator

How long a drawdown really costs you.
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Drawdown Duration Estimator

Trades and months to dig out of a hole.
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Pyramiding Calculator

What adding to winners does to your average entry.
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Costs

Pip Value Calculator

What one pip is worth on your position.
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Profit / Loss Calculator

P&L on a trade, long or short.
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Spread Cost Calculator

What the spread really costs you per trade.
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Margin Calculator

The margin a position locks up, from lots and leverage.
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Commission Break-Even Calculator

How far price must move before you're at zero.
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Trading Cost Calculator

What frequency really costs you per year.
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Performance

Break-Even Win Rate Calculator

The win rate you need just to break even — costs included.
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Profit Factor Calculator

Gross profit ÷ gross loss, honestly framed.
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Sharpe Ratio Calculator

Risk-adjusted return of your sample — with honest caveats.
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Sortino Ratio Calculator

Sharpe's cousin that only punishes downside.
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CAGR Calculator

Annualized growth — and why short samples lie.
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R-Multiple Calculator

Every trade measured in units of initial risk.
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SQN Calculator (Van Tharp)

Van Tharp's SQN — a grade for your sample, not a promise.
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Probability & streaks

Losing Streak Probability Calculator

Long losing streaks are normal — see the odds.
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Expected Consecutive Losses Calculator

The worst streak you should EXPECT, not fear.
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Win/Loss Streak Simulator

Pure randomness produces uglier streaks than you think.
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Martingale Calculator (Danger Demo)

Why doubling-down math destroys accounts.
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Growth

Compounding Calculator

Hypothetical growth — illustrative math, not a forecast.
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Equity Goal Reverse Calculator

What your goal mathematically demands.
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Educational tools only — not financial advice. Verify all figures with your broker.

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